JPH0435281B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to turning of products incorporating rotating members,
Or in processing such as grinding or polishing,
The present invention relates to a processing device that can efficiently perform high-precision processing.

Conventionally, for example, floppy drive motor, VTR
It has been difficult to perform high-precision machining and finishing of products incorporating rotating members such as heads (hereinafter referred to as assembled members). When the inner member and the outer member are separately machined using a general-purpose machine, the respective machined surfaces are misaligned due to gripping errors and the like, making it impossible to obtain high-precision quality. In addition, under the above-mentioned work system that requires regripping work, it is difficult to promote labor saving and automation, resulting in a decrease in work efficiency.

In view of the above-mentioned prior art, it is an object of the present invention to provide a processing device that can process assembled members with high precision and high efficiency.

To achieve the above object, the present invention provides a processing device for a product incorporating a rotating member, which has an inner member and an outer member that rotates on a concentric axis relative to the inner member, in which the inner spindle and the outer spindle are rotated on a concentric axis. an engaging part corresponding to the inner member is provided at the shaft end of the inner spindle, an engaging part corresponding to the outer member is provided at the shaft end of the outer spindle, and the inner spindle and the outer spindle are connected to each other. This is a processing device for a product incorporating a rotating member, characterized in that it is provided with a rotating means for sequentially rotating the rotating member.

Hereinafter, an example in which the present invention is applied to a turning machine will be described in detail.

The turning device for assembled members shown in the general view of FIG. 1 is used to accurately machine assembled members that have been final assembled in order to process floppy drive motors, VTR heads, etc. with high precision. In FIG. 1, the assembly member is mounted on an air chuck portion 1 and is turned by a cutting tool provided on a tool post on a carriage 3. As shown in FIG. As will be described later, the assembled members are rotated by two spindles, one of which is driven by a drive motor 5, and the other spindle is driven by a drive source (not shown) via a belt 7. The air device 9 is for driving the air chuck. Control in machining of assembled members is automatically performed by a numerical control device 11, and manual and other operations are performed by commands from an operating device 13 and a foot petal device 15.

FIG. 2 shows an enlarged sectional view of the spindle section.
The drive means for the inner spindle 17 is constituted by a drive motor 5 attached to the frame 19, and the drive means for the outer spindle 21 is illustrated as having a structure in which a pulley 23 is driven from a drive source (not shown) via a belt 7. An extended inner spindle 25 is connected to the shaft end of the inner spindle 17, and the assembly member W
An engaging portion 27 corresponding to the inner member Wi is provided. The engaging portion 27 is connected to the pin 3 via a spring 29.
1 is inserted into the hole of the inner member Wi, and the extension inner spindle 2 is inserted through the bolt 33.
It is attached to 5. On the other hand, the outer spindle 21
An engaging portion 35 is provided at the tip of the shaft. Engagement part 3
5 consists of an air chuck 37 and an engaging claw 39,
Grip the reference surface 41 of the outer member of the assembled member.

In the above configuration, the air chuck 37 is actuated to grip the reference surface 41 of the outer member Wo with the engagement claw 39, and the inner member Wi is moved to the pin 31 of the engagement portion 27.
engages with to perform machining. Inner spindle 17
, that is, fix the inner and outer members Wi with the pin 31,
Rotating the outer spindle 21 causes the outer member to rotate. By applying a predetermined cutting tool to the processing surface 43 of this outer member and performing turning processing, turning processing can be performed with the Z-axis, which is the axial center of the spindle, as the axis. Next, when the outer spindle 21 is fixed and the inner spindle 17 is rotated, the inner member is rotated by the rotation of the pin 31. If a prescribed tool is applied to the machined surface 45 of the inner member Wi, Z
Precise turning can be performed with the shaft as the center. Of course, in the turning process, the rotation of the outer spindle, the rotation of the inner spindle, the movement of the carriage, etc. can all be performed automatically by a numerical control device.

FIG. 3 shows another embodiment of the inner engaging portion. The engaging surface of the inner member Wi is fitted with a collet 47 with grooves.
It engages with the Since the inner surface of the collet 47 is formed with an inclined surface, it is possible to accommodate several types of inner member diameters, and together with the strain absorbing power of the split grooves, the inner member Wi can be rotated even slightly. can be absorbed. In addition, a spring 49 is interposed between the collet 47 and the inner spindle 17, and a gap is formed between the collet 47 and the connecting bolt 51 so that the collet 47 can slide in the Z-axis direction. Can absorb vibrations inside.

FIG. 4 shows an embodiment in which the collet engaging portion shown in FIG. 3 is further improved. The engaging portion of the inner member in FIG.
A spring unit 53 is formed by combining a collector 47 and a spring 49 in FIG. Spring unit 53 is collet 47
are joined to the intermediate member 55 by a joining bolt 51 so as to be able to slide on the intermediate member 55. The intermediate member 55 is fixed to the inner spindle 17 with bolts 57. Therefore, the unit 53 incorporating the spring 49
can be easily attached and detached by operating the bolt 57. By configuring the spring unit 53 to be compatible with various types of assembled members, it becomes possible to perform quick replacement work for a wide range of assembled members.

As understood from the description of the above embodiments, the present invention provides an inner spindle and an outer spindle on a concentric axis, provides an engaging portion corresponding to the inner member at the shaft tip of the inner spindle, and The present invention is characterized in that an engaging portion corresponding to the outer member is provided at the tip of the shaft of the spindle, and a rotating means for sequentially rotating the inner spindle and the outer spindle is provided, so that the assembled member can be assembled with high precision. Moreover, it can be processed with high efficiency.

[Brief explanation of drawings]

The drawings all show embodiments of the invention.
2 is a detailed sectional view of the spindle portion, and FIGS. 3 and 4 are detailed sectional views of the inner member engaging portion. 17... Inner spindle, 21... Outer spindle, 25... Extended inner spindle, 27... Engaging portion of inner member, 31... Pin, 35... Engaging portion of outer member, 47... Collet, 53 ...Spring unit, W...Assembly member, Wi...Inner member,
Wo...Outer member.

Claims (1)

[Claims] 1. In a processing device for a product incorporating a rotating member, which has an inner member and an outer member that rotates on a concentric axis relative to the inner member, an inner spindle and an outer spindle are provided on a concentric axis, An engaging portion corresponding to the inner member is provided at the tip of the shaft of the inner spindle, an engaging portion corresponding to the outer member is provided at the tip of the shaft of the outer spindle, and the inner spindle and the outer spindle are sequentially rotated. A processing device for a product incorporating a rotating member, characterized by being provided with a rotating means. 2. The processing device for a product incorporating a rotating member according to claim 1, wherein the engaging portion provided at the tip of the shaft of the inner spindle is a pin member corresponding to a hole provided in the inner member. 3. The processing device for a product incorporating a rotating member according to claim 1, wherein the engaging portion provided at the tip of the shaft of the inner spindle is a collet that engages with the inner member. 4. The processing device for a product incorporating a rotating member according to claim 1, wherein the engaging portion provided at the tip of the shaft of the inner spindle is a unit-type collect member equipped with a spring mechanism.